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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The viscosity of water is __________ than that of mercury.

Lower
Same as
Higher
None of these

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Hydraulics and Fluid Mechanics in ME
The specific speed of a turbine is given by the equation

N√P / H3/2
N√P / H3
N√P / H²
N√P / H5/4

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Hydraulics and Fluid Mechanics in ME
Newton's law of viscosity is a relationship between

Pressure, velocity and temperature
Rate of shear strain and temperature
Shear stress and velocity
Shear stress and rate of shear strain

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Hydraulics and Fluid Mechanics in ME
A fluid of kinematic viscosity 0.4 cm²/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be

1.5 m/sec
less than 1 m/sec
2 m/sec
1 m/sec

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Hydraulics and Fluid Mechanics in ME
If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water

52 cm
50 cm
51 cm
52.2 cm

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Hydraulics and Fluid Mechanics in ME
The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is

d > e > m
d > m > e
e > d > m
e > m > d

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